Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December brings a small change in high-temperatures, falling from a moderate 15.4°C (59.7°F) in November to a cool 10°C (50°F). Oarai in December experiences a low-temperature average of 4.6°C (40.3°F).Humidity
In Oarai, the average relative humidity in December is 66%.Rainfall
In Oarai, Japan, in December, during 9.2 rainfall days, 37mm (1.46") of precipitation is typically accumulated. Throughout the year, in Oarai, Japan, there are 163.2 rainfall days, and 839mm (33.03") of precipitation is accumulated.Snowfall
January through March and December are months with snowfall in Oarai. December is the first month it typically snows. Throughout December, in the average 0.4 snowfall days, it receives 1mm (0.04") of snow. In Oarai, during the entire year, snow falls for 5.6 days and aggregates up to 52mm (2.05") of snow.Sea temperature
In Oarai, Japan, in December, the average water temperature is 14.3°C (57.7°F).Note: Navigating the 14.3°C (57.7°F) at 13°C (55.4°F) is no joy, and temperatures less than 10°C (50°F) can threaten breathing and cause a chilling shock, gauging personal stamina.
Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 06:30 and sunset at 16:22. On the last day of December, sunrise is at 06:48 and sunset at 16:32 JST.
Sunshine
In Oarai, Japan, the average sunshine in December is 6h.UV index
In Oarai, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In December, a daily UV index of 3 turns into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What is the usual temperature for Oarai in December?
What is the average humidity in December in Oarai?
How much does it rain in Oarai in December?
When does it start to snow in Oarai?
What is the water temperature in December in Oarai?
What is the month with the shortest days in Oarai?
What is the average length of the day in December in Oarai?
When is the sunrise / sunset in December in Oarai?
How many hours of sunshine does Oarai have in December?
How high is the UV index in December in Oarai?
Average temperature in December
Oarai, Japan
- Average high temperature in December: 10°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (7.6°C).
- Average low temperature in December: 4.6°C
The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).
Average pressure in December
Oarai, Japan
- Average pressure in December: 1016.1mbar
The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in December
Oarai, Japan
- Average wind speed in December: 13.2km/h
The windiest month (with the highest average wind speed) is February (14.4km/h).
The calmest month (with the lowest average wind speed) is July (9.7km/h).
Average humidity in December
Oarai, Japan
- Average humidity in December: 66%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is January (62%).
Average rainfall in December
Oarai, Japan
- Average rainfall in December: 37mm
The wettest month (with the highest rainfall) is October (121mm).
The driest month (with the least rainfall) is January (34mm).
Average rainfall days in December
Oarai, Japan
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Oarai, Japan
- Average snowfall in December: 1mm
The month with the highest snowfall is February (32mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Oarai, Japan
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (2.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Oarai, Japan
- Average sea temperature in December: 14.3°C
The best month for swimming (with the highest average sea temperature) is August (23.6°C).
The coldest month (with the lowest average sea temperature) is February (11.7°C).
Average daylight in December /
Average sunshine in December
Oarai, Japan
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in December
Oarai, Japan
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in December
Oarai, Japan
- Average UV index in December: 3
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in December
Oarai, Japan
- Average cloud cover in December: 33
The months with the most cloud cover are June and July (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 30).
Average visibility in December
Oarai, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, October, November and December (10km).
The months with the lowest visibility are May, June, July, August and September (9km).
Oarai, Japan
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